especially if he thinks it would trigger american involvement because america could be his last line of defense and last protection against something much worse. >> i haven't seen any hard evidence that they've been used. there have been some reports, and if they were used it seems to have been on an extremely small scale. but again, i think there's no hard evidence. might they be used? sure, desperate leaders might do desperate things if they felt there was no alternative. i don't think there's anything we can do to prevent their use, other than to threaten, as we have, if they were to be used it would cross a-- quote, unquote-- red line and have dire consequences. the real question is if they are used on any significant scale what do we do then? from what i can tell, there are large stocks disbursed on any number of missiles and arcraft so in order to prevent continued use you'd really have to take out an enormous chunk of the syrian military. that's a euphemism for going to war. it's an extraordinarily difficult scenario. one question, charlie, which i don't have an answer to is if the syria